package com.wires.lu.practice;


import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * 题目： 多线程之间顺序调用，实现A-B-C三个线程启动 要求如下：
 * AA打印5次 BB打印10次 CC打印15次
 * 紧接着
 * AA打印5次 BB打印10次 CC打印15次
 * 。。。
 * 循环10次
 */


class Sharesource{
    private int number=1;//A:1 B:2 C:3
    private Lock lock=new ReentrantLock();
    private Condition c1=lock.newCondition();
    private Condition c2=lock.newCondition();
    private Condition c3=lock.newCondition();


    public void print5(){
        lock.lock();
        try{
            //1 判断
            while (number!=1){
                c1.await();
            }
            //2 干活
            for (int i = 0; i < 5; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //3 通知
            number=2;
            c2.signal();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();
        }
    }
    public void print10(){
        lock.lock();
        try{
            //1 判断
            while (number!=2){
                c2.await();
            }
            //2 干活
            for (int i = 0; i < 10; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //3 通知
            number=3;
            c3.signal();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();
        }
    }
    public void print15(){
        lock.lock();
        try{
            //1 判断
            while (number!=3){
                c3.await();
            }
            //2 干活
            for (int i = 0; i < 15; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //3 通知
            number=1;
            c1.signal();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();
        }
    }


}

public class SyncAndReentrantLockDemo {


    public static void main(String[] args) {
        Sharesource sharesource=new Sharesource();

        new Thread(()->{
            for (int i = 0; i < 5; i++) {
                sharesource.print5();
            }
        },"A").start();
        new Thread(()->{
            for (int i = 0; i < 10; i++) {
                sharesource.print10();
            }
        },"B").start();
        new Thread(()->{
            for (int i = 0; i < 15; i++) {
                sharesource.print15();
            }
        },"C").start();
    }
}























